In Statistics, a data sample is a set of data collected and/or carefully chosen from a statistical population by a defined procedure. Normally, the population is very huge, constructing a census or a whole enumeration of all the values in the population is either unreasonable or intolerable. The sample usually signifies a subset of controllable size. Samples are collected and statistics are intended from the samples so that one can make implications or extrapolations from the sample to the population. So the answer is letter c.
